LR 10.1(a) The requirements of this Chapter are additional to those of Pt 6, Ch 2 Electrical Engineering of the Rules for Ships.
LR 10.1(b) In cases where LR is authorised to issue the relevant statutory
certificates, and is required to do so, the requirements of this Chapter, including LR's
interpretations where relevant and the requirements of Pt 6, Ch 2 Electrical Engineering of the Rules for Ships will be applied together with any
amendment or interpretation adopted by the appropriate National Authority.
10.1.1 The provisions of this chapter are applicable to ships
carrying cargoes which are inherently, or due to their reaction with other substances,
flammable or corrosive to the electrical equipment, and shall be applied in conjunction
with applicable electrical requirements of Part D - Electrical installations of
chapter II-1 of SOLAS.
10.1.2.1 Electrical installations shall be such as to minimize the
risk of fire and explosion from flammable productsfootnote.
LR 10.1(c) Where electrical equipment is to be of a 'safe type' in order to comply
with IEC 60092 : Electrical installations in ships - Part 502: Tankers - Special
features, such equipment is to be certified for the gases/vapours involved. The
construction and type testing is to be in accordance with IEC Publication 60079: ,
Electrical Apparatus for Explosive Gas Atmospheres, or an equivalent National
Standard.
10.1.2.2 Where the specific cargo is liable to damage the materials
normally used in electrical apparatus, due consideration shall be given to the particular
characteristics of the materials chosen for conductors, insulation, metal parts, etc. As
far as necessary, these components shall be protected to prevent contact with gases or
vapours liable to be encountered.
10.1.3 The Administration shall take appropriate steps to ensure
uniformity in the implementation and the application of the provisions of this chapter in
respect of electrical installations.
10.1.4 Electrical equipment, cables and wiring shall not be installed
in the hazardous locations unless it conforms with the standards not inferior to those
acceptable to the Organizationfootnote. However, for locations not covered by such standards, electrical
equipment, cables and wiring which do not conform to the standards may be installed in
hazardous locations based on a risk assessment to the satisfaction of the Administration,
to ensure that an equivalent level of safety is assured.
LR 10.1(d) Absence of information on temperature class and apparatus group in column
i in the Table of Chapter 17 means that data are not currently available, and
this should not be confused with the non-flammable (NF) notation describing some
substances. For those cargoes where there is absence of information on temperature class
and apparatus group in Chapter 17, this information is to be submitted where
carriage is contemplated.
10.1.5 Where electrical equipment is installed in hazardous
locations, as permitted in this chapter, it shall be to the satisfaction of the
Administration and certified by the relevant authorities recognized by the Administration
for operation in the flammable atmosphere concerned, as indicated in column i in the
table of chapter 17.
10.1.6 For guidance, indication is given if the flashpoint of a
substance is in excess of 60°C. In the case of a heated cargo, carriage conditions might
need to be established and the requirements for cargoes having a flashpoint not exceeding
60°C applied.
LR 10.1(e) The emergency source of electrical power is also to remain operable under
the conditions described in Ch 1, 2.9 Survival requirements Survival requirements.